茶树鲜叶品质成分浸提方法比较及应用

doi:10.13305/j.cnki.jts.2014.02.005

茶叶科学 ›› 2014, Vol. 34 ›› Issue (2): 137-144.doi: 10.13305/j.cnki.jts.2014.02.005

茶树鲜叶品质成分浸提方法比较及应用

杨亦扬^1,2, 张佳¹, 王川丕¹, 黎星辉³, 阮建云^1,*

1. 中国农业科学院茶叶研究所,农业部茶树生物学与资源利用重点实验室,浙江杭州 310008;
2. 江苏省农业科学院园艺研究所,江苏南京 210014;
3. 南京农业大学茶叶研究所,江苏南京 210095

收稿日期:2013-06-05 修回日期:2013-10-05 出版日期:2014-04-15 发布日期:2019-09-03
通讯作者: *jruan@mail.tricaas.com
作者简介:杨亦扬（1983— ）,女,江苏阜宁人,博士,主要从事茶树生理与营养研究。
基金资助:
国家茶叶产业技术体系（CARS23）、中国农业科学院科技创新工程、江苏省农业科技自主创新基金CX（12）3047

Evaluation of Methods for Extraction of Quality-related Constituents in Fresh Tea Leaves

YANG Yiyang^1,2, ZHANG Jia¹, WANG Chuanpi¹, LI Xinghui³, RUAN Jianyun^1,*

1. Tea Research Institute , Chinese Academy of Agricultural Sciences, Key Laboratory of Tea Plant Biology and Resources Utilization, Ministry of Agriculture, Hangzhou 310008, China;
2. Insitute of Horticulture, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
3. Tea Research Institute, Nanjing Agricultural University, Nanjing 210095, China

Received:2013-06-05 Revised:2013-10-05 Online:2014-04-15 Published:2019-09-03

摘要/Abstract

摘要： 代谢组学和系统生物学研究要求数据丰富、重复性好,简单易行、浸提效率高的样品前处理方法是获得较好的试验结果的关键步骤。比较了不同浸提剂（甲醇、乙醇和高氯酸）和不同研磨方法（球磨机和研钵研磨）对茶树叶片品质成分的浸提效果,结果表明,70%乙醇和70%甲醇对茶鲜叶氨基酸的浸提效率显著高于无水甲醇和无水乙醇,而对鲜叶茶多酚的浸提效率以100%乙醇和70%乙醇最好;3 mol·L^-1高氯酸对鲜叶氨基酸浸提效率最高,超过70%乙醇,但对茶多酚的浸提效率最低。优化出一种针对茶树鲜叶浸提的快速前处理方法（70%乙醇,球磨机研磨5 min）。对鲜叶经冷冻干燥和微波杀青处理后浸提的茶多酚和氨基酸含量进行了比较,发现冷冻干燥可以更好地保持茶树叶片中特征代谢产物成分。

关键词: 茶树, 浸提, 茶多酚, 氨基酸

Abstract: Metabolomic and systems biology require the acquisition of reproducible, reliable and homogeneous biological data set, the efficient extraction method is the key step in getting the satisfactory results of investigation. The influence on the extracting effect of quality-related constituents in tea leaves was investigated on various extracting solvents(methanol, ethanol, HClO₄) and various grind methods (ball grinder and mortar). Results showed that 70% ethanol and 70% methanol proved to be more suitable solvent for extracting the amino acids in fresh tea leaves compared with 100% methanol and 100% ethanol. For tea polyphenols, 100% ethanol and 70% ethanol showed the highest extraction efficiency. 3 mol·L^-1HClO₄ showed obvious advantage over all other solvents for amino acids extraction in fresh tea leaves, however, it showed the lowest extraction efficiency in tea polyphenols extraction. The use of 70% ethanol and grinded by ball grinder for 5 min has been proved to be the most suitable method. In addition, the amino acids and tea polyphenols concentration in freeze-dried leaves and oven-dried leaves were compared, the results showed that freeze-dry process could retain more quality-related constituents in tea leaves.

Key words: tea plant (Camellia sinensis), extraction, polyphenols, amino acids

中图分类号:

S571.1

杨亦扬, 张佳, 王川丕, 黎星辉, 阮建云. 茶树鲜叶品质成分浸提方法比较及应用[J]. 茶叶科学, 2014, 34(2): 137-144. doi: 10.13305/j.cnki.jts.2014.02.005.

YANG Yiyang, ZHANG Jia, WANG Chuanpi, LI Xinghui, RUAN Jianyun. Evaluation of Methods for Extraction of Quality-related Constituents in Fresh Tea Leaves[J]. Journal of Tea Science, 2014, 34(2): 137-144. doi: 10.13305/j.cnki.jts.2014.02.005.

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茶树鲜叶品质成分浸提方法比较及应用

Evaluation of Methods for Extraction of Quality-related Constituents in Fresh Tea Leaves

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